Have a bunch of brake pad material baked onto the outside of my rotors in certain areas and it is causing vibration under hard braking. Is sanding them down my best option or will this go away with time? I do have a set of track pads coming and from what I am told they will help remove the old pad material from the rotors but that is two weeks away. What has worked for everyone else that has had this issue?

I usually just drive it on the street and they will disappear over time.I have heard that using window cleaner will help with removing the deposits.The ammonia in the window cleaner is what makes this work,so I am told.Cooling your brakes down by doing a proper cool down really helps with this issue.

You can always use a rotor hone. The bit attaches to any cordless hand drill and you just use it on your rotor. Some motorcycle guys I talked to just used a scotch-brite pad and some alcohol, or something.

You can always use a rotor hone. The bit attaches to any cordless hand drill and you just use it on your rotor. Some motorcycle guys I talked to just used a scotch-brite pad and some alcohol, or something.

I believe that is called burnishing, where a softer metal is used to clean a harder metal (steel rotors in this case). I have that exact tool, purchased from McMaster-Carr it works great at removing pad deposits (often thought to be warped rotors).

Glad to see people talking about pad deposits as opposed to warped rotors!

Do you have the original BMW brakes, or a big brake kit? Some big brake kit manufacturers will send "cleaner pads" on what is essentially a rental program. You pay a deposit, they send you some abrasive pads with specific cleaning instructions, and you send the pads back once you've gotten to scrub the rotors clean.

Glad to see people talking about pad deposits as opposed to warped rotors!

Do you have the original BMW brakes, or a big brake kit? Some big brake kit manufacturers will send "cleaner pads" on what is essentially a rental program. You pay a deposit, they send you some abrasive pads with specific cleaning instructions, and you send the pads back once you've gotten to scrub the rotors clean.

interesting. These are OEM brakes and Pads. I am waiting on a set of PCF pads and hope that once they are on the car for a little bit it will do the trick. thanks for the good info

All of the holes were filled on my front rotors after an autocross, but normal driving and braking has removed the deposited material. It took about two weeks, but there was no vibration or warping attributed to the heavy deposits. Seems like they go away in time for the next event.